ImportError:无法导入名称“evaluate”(来自意外导入evaluate)

Question

from surprise import Reader, Dataset, SVD
from surprise import evaluate
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-12-6d771df269b8> in <module>()
----> 1 from surprise import evaluate

ImportError: cannot import name 'evaluate'

第一行，来自意外导入阅读器，数据集，SVD工作正常。只是，它不能从惊喜包中导入评估。

我已经安装了scikit--使用conda的惊喜。我想它已经安装成功了。

Answer 1

根据文档，evaluate()方法是deprecated in version 1.0.5 (功能上被model_selection.cross_validate()取代)和removed in version 1.1.0，这很可能就是您安装的方法。

Answer 2

从2020年1月开始，改为执行以下操作...

from surprise import SVD
from surprise import Dataset
from surprise.model_selection import cross_validate

# Load the dataset (download it if needed)
data = Dataset.load_builtin('ml-100k')

# Use the famous SVD algorithm
algo = SVD()

# Run 5-fold cross-validation and then print results
cross_validate(algo, data, measures=['RMSE', 'MAE'], cv=5, verbose=True)